Topic: DNA as genetic material, DNA and RNA structure, DNA packaging· Genetics and Evolution

The final proof for DNA as the genetic material came from the experiments of :

1. Hershey and Chase

2. Avery, Mcleod and McCarty

3. Hargobind Khorana

4. Griffith

Doubtly Asked 30 Oct 2026 NEET UG 2017 Practice test neet Save WhatsApp Report

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Answer: 1. Hershey and Chase

Hershey and Chase used radioactive \(^{32}P\) (labels DNA) and \(^{35}S\) (labels protein) in bacteriophages. Only the DNA entered the bacteria, which proved it is the genetic material.

Griffith showed transformation, and Avery, MacLeod and McCarty showed the transforming principle was DNA by enzyme tests, but the final proof came from Hershey-Chase. Khorana worked on the genetic code.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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The final proof for DNA as the genetic material came from the experiments of :

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